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Study: Toric IOLs effectively manage corneal astigmatism in cataract patients
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Implantation of a toric IOL may be considered a good treatment for managing corneal astigmatism in cataract patients, according to a prospective study.
Noël J.C. Bauer, MD, PhD, and colleagues implanted three different models of AcrySof toric IOLs (Alcon) in 53 eyes of 43 patients with cataract. Specifically, 16 eyes received an IOL with a cylinder power of 1.5 D (group one), 14 eyes received an IOL with 2.25 D of cylinder power (group two) and 23 eyes received an IOL with 3 D of cylinder (group three).
Using a toric IOL calculating program, the investigators further separated group three into two subgroups, consisting of 13 eyes that could be fully corrected and 10 eyes that could only be partially corrected.
At 4 months postop, uncorrected visual acuity averaged 0.77 in group one, 0.93 in group two, 0.82 in group three eyes that could be fully corrected and 0.47 in group three eyes that could not be fully corrected, the authors noted.
Overall, more than 90% of eyes in groups one, two and fully corrected eyes in group three had achieved a UCVA of 20/40 or better; almost 80% of these eyes had achieved a UCVA of 20/25 or better, they added.
In addition, 74% of eyes had achieved a residual refractive astigmatism of less than 0.75 D and 91% of all eyes had achieved a residual refractive astigmatism of less than 1 D.
IOL misalignment averaged 2.5° in group one, 3.5° in group two and 4.1° in group three.
There were no IOL-related complications, according to the study, published in the September issue of Journal of Cataract & Refractive Surgery.